Face mask seal



FIG. 1 is a perspective view of an embodiment of a face mask seal configured in accordance with the present invention;

FIG. 2 is a rear view of the face mask seal of FIG. 1.

FIG. 3 is a front view of the face mask seal of FIG. 1.

FIG. 4 is a left side view of the face mask seal of FIG. 1. The right side view is a mirror image of the left side view.

FIG. 5 is a top view of the face mask seal of FIG. 1; and,

FIG. 6 is a bottom view of the face mask seal of FIG. 1.

The broken lines showing portions of the face mask seal are included for the purpose of illustrating the environmental structure and form no part of the claimed design. 

CLAIM The ornamental design for a face mask seal, as shown and described. 